A098747 - cp's OEIS frontend

A098747 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having exactly k UDU's at low level.

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	8
8	4
9	1
10	1
11	24
12	11
13	5
14	1
15	1
16	75
17	35
18	14
19	6
20	1
21	1
22	243
23	113
24	47
25	17
26	7
27	1
28	1
29	808
30	376
31	156
32	60
33	20
34	8
35	1
36	1
37	2742
38	1276
39	532
40	204
41	74
42	23
43	9
44	1
45	1
46	9458
47	4402
48	1840
49	712
50	257
51	89
52	26
53	10
54	1
55	1
56	33062
57	15390
58	6448
59	2507
60	917
61	315
62	105
63	29
64	11
65	1
66	1
67	116868

[1, 1, 1, 3, 1, 1, 8, 4, 1, 1, 24, 11, 5, 1, 1, 75, 35, 14, 6, 1, 1, 243, 113, 47, 17, 7, 1, 1, 808, 376, 156, 60, 20, 8, 1, 1, 2742, 1276, 532, 204, 74, 23, 9, 1, 1, 9458, 4402, 1840, 712, 257, 89, 26, 10, 1, 1, 33062, 15390, 6448, 2507, 917, 315, 105, 29, 11, 1, 1, 116868]

cp's OEIS Frontend

A098747 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having exactly k UDU's at low level.

Table of values

List of values